Change remaining references to python 3.8

Author: theref

.github/workflows/publish.yaml

@@ -15,7 +15,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: 3.8
+        python-version: 3.9
 
     - name: Install dependencies
       run: |

pyproject.toml

@@ -15,7 +15,7 @@ write_to = "ape_scroll/version.py"
 
 [tool.black]
 line-length = 100
-target-version = ['py38', 'py39', 'py310']
+target-version = ['py39', 'py310']
 include = '\.pyi?$'
 
 [tool.pytest.ini_options]